![One of the hot springs at the Norris Geyser Basin at Yellowstone National Park on May 12, 2016. [Getty File Photo] (MLADEN ANTONOV/AFP/Getty Images)](https://www.ajc.com/resizer/v2/5ACSHGXBHHA2JWJRRAMBF64PCQ.jpg?auth=7b85a15926ac71fc5236f8913cd6ec806f4718b2e4b90ff39f918170f6576093&width=1600&height=900&smart=true)
A man described as being in his early 20s fell into the Norris Geyser Basin in Yellowstone National Park Tuesday, witnesses said.
A recovery effort is underway. Because a body has not been found, rangers said it is likely that the man died.
Searchers are being extra cautious because of the spring's dangerous temperature.
Tuesday's search comes on the heels of several other high-profile incidents at the park.
On Saturday, a 13-year-old boy was burned around his ankle and foot after his father, who had been carrying him, slipped in the hot spring in the park's Upper Geyser Basin.
In May, a Canadian film crew was accused of leaving an established boardwalk and stepping onto a geothermal feature where they snapped photos and took video of themselves.
Also last month, a Canadian man loaded a bison calf into his SUV because he thought it was cold. The calf later had to be euthanized because it could not be reunited with its herd.
In April, park officials warned people against approaching wildlife in the park after a woman was caught on video petting a bison.
Check back for updates.
The Associated Press contributed to this report.
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